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Financial Instruments And Risk Management (Gross Notional Amount Of Outstanding Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014
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Derivative Instruments Designated As Cash Flow Hedges [Member] | Currency Forward Contracts [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Currency forward contracts | $ 106,500 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember | $ 103,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember | $ 142,500 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember
Derivative Instruments Designated As Cash Flow Hedges [Member] | Foreign Exchange Option [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Currency forward contracts | 7,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForeignExchangeOptionMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember | 0 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForeignExchangeOptionMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember | 0 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForeignExchangeOptionMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember
Derivative Instruments Not Designated As Cash Flow Hedges [Member] | Currency Forward Contracts [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Currency forward contracts | $ 75,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | $ 128,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | $ 36,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Details
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- Details
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- Details
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